Home / 30,634.79-45,958.34-13,990.35

Finding the Fourth Proportional to 30,634.79, 45,958.34 and 13,990.35

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Solution

The fourth proportional to 30,634.79, 45,958.34 and 13,990.35 is: 20,988.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,634.79 : 45,958.34 = 13,990.35 : x
  2. Step 2: Convert to fraction form
    30,634.79/45,958.34 = 13,990.35/x
  3. Step 3: Cross multiply
    30,634.79x = 45,958.34 × 13,990.35
  4. Step 4: Simplify right side
    30,634.79x = 642,973,262.02
  5. Step 5: Solve for x
    x = 642,973,262.02/30,634.79
  6. Step 6: Final answer
    x = 20,988.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.